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Video Speed Changer

Make a video faster for time-lapse effects or slower for dramatic slow motion. Pick a speed from 0.25x to 4x and decide whether to keep the sound, with the voice pitch kept natural. The result is an MP4 made in your browser.

How to use the Video Speed Changer: Choose a video. Pick a speed with the buttons or slider. Press Change speed and download the MP4. It is free, needs no sign-up and runs in your browser, so your files are never uploaded.

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How it works

How to use the Video Speed Changer

  1. 1

    Choose a video.

  2. 2

    Pick a speed with the buttons or slider.

  3. 3

    Press Change speed and download the MP4.

Tips

Tips for the best result

Questions

Frequently asked questions

Does the voice sound strange when sped up?

No. The pitch is kept natural so voices stay clear.

Does slow motion look smooth?

It depends on the original frame rate. Clips shot at 60 frames per second or more look smoothest.

Are my files uploaded to a server?

No. The work happens inside your browser on your own device. Your files are never sent to us or to anyone else, and they are gone when you close the page.

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